CN212925631U - Vertical locking mechanism for milling device under multiple working conditions and milling device - Google Patents
Vertical locking mechanism for milling device under multiple working conditions and milling device Download PDFInfo
- Publication number
- CN212925631U CN212925631U CN202020217686.0U CN202020217686U CN212925631U CN 212925631 U CN212925631 U CN 212925631U CN 202020217686 U CN202020217686 U CN 202020217686U CN 212925631 U CN212925631 U CN 212925631U
- Authority
- CN
- China
- Prior art keywords
- milling
- locking mechanism
- tooth
- milling device
- vertical locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model relates to a vertical locking mechanical system and mill device for milling under device multiplex condition, locking mechanical system is including milling device vertical movement part (7), horizontal layer board (1), spring bolt mechanism (4) and drive keeper (6), is equipped with tooth spare (2) on horizontal layer board (1), and spring bolt mechanism (4) are articulated with milling device vertical movement part (7), and drive keeper (6) are articulated with milling device vertical movement part (7), and spring bolt mechanism (4) are articulated with drive keeper (6) and get into through drive keeper (6) the tooth inslot. The utility model discloses can satisfy and mill the locking demand under operating modes such as device receipts car, high-speed operation, urgent promotion, control system outage. The utility model discloses a locking mechanical system adopts profile of tooth spare as the locking stiff end, possesses a plurality of latched positions, satisfies and mills the device and overhaul and maintain the maintenance requirement.
Description
Technical Field
The utility model relates to a railway maintenance of equipment especially relates to a vertical locking mechanical system and mill device for milling under device multiplex condition.
Background
The milling device on the rail milling vehicle comprises a vertical transmission mechanism and a horizontal transmission mechanism, and the vertical and horizontal feeding motions of the milling device are realized by power drive in the milling process. The vertical and horizontal transmission mechanisms must be reliably locked when the vehicle is collected, run at high speed and maintained, so as to ensure the safety of the milling device and the driving. Secondly, under the working conditions of operating system failure, milling device power failure, starting emergency mode, milling device emergency lifting and the like, the milling device needs to be moved to a fixed position and reliable locking is completed. Furthermore, the vertical locking mechanism must provide a plurality of locking positions, i.e. the milling device can be locked in a plurality of positions, in order to meet the maintenance and service requirements of the milling device in a plurality of positions.
Although the existing one-way locking mechanism for the rail milling vehicle can be used for locking a milling operation device for the rail milling vehicle, the existing locking mechanism for the rail milling vehicle still has the technical defects of being not compact in structure, incapable of realizing multi-position locking, incapable of being locked in place under emergency conditions and the like. Therefore, it is necessary to design a vertical locking mechanism with the above functions to achieve reliable locking of the milling device in the vertical direction under various working conditions, that is, the mechanism can achieve effective locking of the milling device in the vertical direction under working conditions such as high-speed operation of a rail milling vehicle, failure of a milling device operating system, emergency lifting of the milling device, and the like, and the vertical locking mechanism can provide a plurality of locking positions.
The invention patent of China with the patent number ZL201610687559.5 relates to a multidirectional adjusting blind hinge, which comprises a sash hinge shaft (1) with the axis vertical to the rotation surface of a door sash and mounted on the door sash, a hinge arm (2) with one end connected to the sash hinge shaft (1) to rotate around the sash hinge shaft (1) relative to the door sash, a frame hinge shaft (3) arranged in the frame body of the door sash and connected to the other end of the hinge arm (2), a sash adjusting mechanism with a sash adjusting device arranged between the door sash and the sash hinge shaft (1), and an arm adjusting mechanism arranged between a sash side arm (21) and a frame side arm (22) forming the hinge arm (2); the fan adjusting mechanism is perpendicular to the arm adjusting mechanism in adjusting direction. According to the technical scheme, the fan adjusting mechanism and the arm adjusting mechanism are respectively adjusted in the adjusting directions which are perpendicular to each other, so that the adjustment is more visual and convenient, and the adjustment efficiency is improved. The arm adjusting mechanism is also provided with a vertical locking mechanism arranged between the fan-side arm (21) and the frame-side arm (22). However, the vertical locking mechanism of the present invention is only suitable for door and window hinges and is not suitable for milling devices on a milling rail car, and therefore, needs to be improved.
The Chinese utility model patent with the patent number ZL201520866268.3 relates to a screen window lock with an integrated handle and lock body, which is characterized by comprising a handle body, a vertical locking mechanism and a transverse unlocking mechanism; one end of the handle body is provided with an integrally formed mounting chamber; the vertical locking mechanism and the transverse unlocking mechanism are installed in the installation cavity, a jacking portion is formed in the side face of the vertical locking mechanism, a locking portion which is matched with the jacking portion is correspondingly formed in the side face of the transverse unlocking mechanism, a locking hand pressing portion which extends out of the installation cavity is arranged on the vertical locking mechanism, and an unlocking hand pressing portion which extends out of the installation cavity is arranged on the transverse unlocking mechanism. The utility model discloses a have the handle body and lock body integrated design to the handle body does not need the equipment with the lock body, simple structure, and production efficiency is high, reduces the expenditure of enterprise, has improved characteristics such as market competition of enterprise. However, the vertical locking mechanism of the utility model is only suitable for door and window locks and is not suitable for milling devices on a rail milling machine, so that the improvement is still needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defect that the screen window lock that above-mentioned current multidirectional regulation blind hinge and handle lock body integrated design exists, the utility model provides a vertical locking mechanical system for milling rail car mills device realizes milling the locking of vertical direction under the multiple operating mode of device through this locking mechanical system, its adaptable rail car that mills high-speed operation, mill device operating system trouble, mill reliable locking under the operating mode such as device emergency lift to solve technical problem such as current locking mechanical system structure complicacy, not compact. The utility model discloses a technical scheme specifically as follows:
a vertical locking mechanism for a milling device under multiple working conditions comprises a milling device vertical moving part, a transverse supporting plate, a lock tongue mechanism and a driving and maintaining device, wherein a tooth-shaped part is arranged on the transverse supporting plate, the lock tongue mechanism is hinged with the milling device vertical moving part, the driving and maintaining device is hinged with the milling device vertical moving part, and the lock tongue mechanism is hinged with the driving and maintaining device and enters a tooth-shaped groove through the driving and maintaining device.
The tooth-shaped part provides a plurality of locking positions for the milling device, so that the locking requirements of the milling device under multiple working conditions such as overhauling, maintenance and the like are met.
Preferably, the toothed member is provided with a plurality of toothed grooves at a certain pitch, the latch mechanism is mounted on the vertically moving part of the milling device through a rotating shaft, and the driving and holding device is hinged to the vertically moving part of the milling device through an ear seat.
In any of the above schemes, preferably, two position detection elements are arranged at two rotation limit positions of the latch mechanism, and the two position detection elements are used for feeding back the position state of the latch mechanism to a milling device control system to realize safety interlocking.
In any of the above aspects, it is preferable that the two position detection elements employ position detection sensors.
In any of the above solutions, preferably, the tooth-shaped member is provided with a mounting hole at a back side of the tooth-shaped groove, the tooth-shaped member is fixedly mounted on the transverse supporting plate through the mounting hole, and the tooth-shaped member moves transversely with the transverse supporting plate and is used for bearing the weight of the vertically moving part of the milling device.
In any of the above aspects, preferably, the drive holding means employs a linear drive.
In any of the above schemes, preferably, the power source of the linear actuator is driven by any one of electricity, liquid and gas, and a reliable extending station can be maintained when no power source is input.
In any of the above embodiments, it is preferable that the latch mechanism is reliably inserted into the tooth-shaped groove all the time by the drive holding means until the drive holding means introduces power to move out the latch mechanism.
In any of the above solutions, it is preferred that the latch mechanism is able to move clear of the tooth-shaped groove without interference when the milling device has a tendency to move upwards.
In any of the above solutions, it is preferable that the latch mechanism includes a latch bolt, and the latch bolt is completely embedded into the next tooth-shaped groove when the latch mechanism moves up one tooth pitch at a time.
The spring bolt mechanism can rotate freely in a set space around the rotating shaft, and the spring bolt is embedded into the tooth-shaped groove after the spring bolt mechanism rotates for a certain angle, so that the locking of the milling device is realized.
In any of the above schemes, preferably, when the driving holding device has no power input and the milling device has a downward movement tendency, the latch mechanism is tightly attached to the upper surface of the inner wall of the tooth-shaped groove and forms a self-locking structure, so that the milling device is ensured not to generate downward displacement.
When the unlocking is required, the milling device control system inputs a power source to the driving and maintaining device, and the driving and maintaining device drives the lock tongue to rotate to the minimum limit position under the action of the power source, so that the unlocking of the mechanism is completed.
In any of the above solutions, preferably, the number of the tooth-shaped grooves is set according to actual requirements.
In any one of the above aspects, preferably, the position detection sensor is a contact position sensor.
In any one of the above aspects, it is preferable that the position detection sensor is a proximity position sensor.
In any of the above aspects, preferably, the contact position sensor is a position sensor in the form of a two-dimensional matrix or a position switch.
In any of the above aspects, the proximity position sensor is preferably an electromagnetic position sensor.
In any of the above aspects, the proximity position sensor is preferably a photoelectric position sensor.
In any one of the above aspects, the proximity position sensor is preferably a differential transformer position sensor.
In any of the above aspects, it is preferable that the proximity position sensor is an eddy current position sensor.
In any of the above aspects, it is preferable that the proximity position sensor is a capacitive position sensor.
In any of the above aspects, preferably, the proximity position sensor is a reed pipe position sensor.
In any of the above aspects, preferably, the proximity position sensor is a hall position sensor.
A milling device comprises the vertical locking mechanism for the milling device under multiple working conditions in any one of the preferable schemes.
Compared with the prior art, the utility model beneficial effect be:
(1) the vertical locking mechanism can meet the locking requirements of the milling device under working conditions of turning-up, high-speed operation, emergency lifting, system power failure control and the like;
(2) the vertical locking mechanism adopts a modular design, has an ingenious and compact structure, saves installation space, is simple to assemble and is simple and convenient to operate and control;
(3) the utility model adopts the tooth-shaped part as the locking fixed end, so that the locking mechanism has a plurality of locking positions, and the requirements of the milling device on maintenance and repair are met;
(5) the drive holding device adopts the linear driver with the reset holding function, further reduces the number of parts and has good integration degree.
Drawings
Fig. 1 is a schematic structural view of a locking state of a preferred embodiment of a vertical locking mechanism for a milling device under multiple operating conditions according to the present invention.
Fig. 2 is a schematic view of an unlocked state structure for the embodiment shown in fig. 1 of the vertical locking mechanism for milling device under multiple operating conditions according to the present invention.
Fig. 3 is an isometric view of the embodiment of the vertical locking mechanism for milling apparatuses under multiple operating conditions shown in fig. 1 according to the present invention.
Fig. 4 is a front view of the embodiment of the vertical locking mechanism for milling device under multiple operating conditions shown in fig. 1 according to the present invention.
Fig. 5 is a top view of the embodiment of the vertical locking mechanism diagram 1 for milling device under multiple operating conditions according to the present invention.
Description of reference numerals:
1, a transverse supporting plate; 2, a tooth-shaped piece; 3 a rotating shaft; 4, a lock tongue mechanism; 5 a position detection sensor; 6 driving the holding device; 7 milling a device vertical moving part; 8 ear seats.
Detailed Description
The following describes in detail a preferred technical solution of the vertical locking mechanism for a milling device under multiple operating conditions with reference to fig. 1 to 5:
a vertical locking mechanism for a milling device under multiple working conditions comprises a milling device vertical moving part 7, a transverse supporting plate 1, a lock tongue mechanism 4 and a driving retaining device 6, wherein a tooth-shaped part 2 is arranged on the transverse supporting plate 1, the lock tongue mechanism 4 is hinged with the milling device vertical moving part 7, the driving retaining device 6 is hinged with the milling device vertical moving part 7, and the lock tongue mechanism 4 is hinged with the driving retaining device 6 and enters a tooth-shaped groove through the driving retaining device 6.
The tooth-shaped member 2 is provided with a plurality of tooth-shaped grooves according to a certain pitch, the bolt mechanism 4 is arranged on a vertical moving part 7 of the milling device through a rotating shaft 3, and the driving and maintaining device 6 is hinged on the vertical moving part 7 of the milling device through an ear seat 8.
The tooth-shaped member 2 provides a plurality of locking positions for the milling device, thereby meeting the locking requirements of the milling device under multiple working conditions such as overhaul, maintenance and the like.
The plurality of tooth-shaped grooves are used for being suitable for locking the milling device at different vertical positions. The number of the tooth-shaped grooves is set according to actual requirements.
Two position detection elements are arranged at two rotation limit positions of the bolt mechanism 4 and used for feeding back the position state of the bolt mechanism 4 to a milling device control system to realize safety interlocking.
The two position detecting elements preferably employ position detecting sensors 5. The position detection sensor 5 may alternatively employ a contact position sensor or a proximity position sensor. The contact position sensor can be selected from a travel switch or a two-dimensional matrix position sensor. The proximity position sensor can be any one of electromagnetic type, photoelectric type, differential transformer type, eddy current type, capacitance type, reed switch type and Hall type.
The tooth-shaped member 2 is provided with a mounting hole at the back of the tooth-shaped groove, the tooth-shaped member 2 is fixedly mounted on the transverse supporting plate 1 through the mounting hole, and the tooth-shaped member 2 transversely moves along with the transverse supporting plate 1 and is used for bearing the weight of a vertical moving part 7 of the milling device.
The drive holding means 6 preferably employs a linear drive. The power source of the linear driver can be driven by any one of electricity, liquid and gas.
The latch mechanism 4 is reliably inserted into the tooth-shaped groove under the action of the drive retaining device 6 until the drive retaining device 6 introduces power to move the latch mechanism 4 out. When the milling device has a tendency to move upwards, the bolt mechanism 4 can smoothly leave the tooth-shaped groove without interference. The latch bolt mechanism 4 comprises a latch bolt which is then fully embedded in the next tooth-shaped groove when the latch bolt mechanism 4 is moved upwards one tooth pitch at a time. When the driving and holding device 6 has no power input and the milling device has a downward movement trend, the lock tongue mechanism 4 is tightly attached to the upper surface of the inner wall of the tooth-shaped groove and forms a self-locking structure, so that the milling device is ensured not to generate downward displacement.
The utility model discloses a theory of operation:
as shown in fig. 1, the vertical locking mechanism is in a locked state: when the rail milling vehicle runs at a high speed, the milling device is in a parking position, at the moment, the vertical locking mechanism locks the milling device at a parking position, the locking position keeps reliable locking under the condition of no power source input, and no unlocking risk exists, the vertical locking mechanism is realized by driving the retaining device 6, the driving retaining device 6 keeps an extending state under the condition of no power source input, the lock tongue is pushed into a tooth-shaped groove on the tooth-shaped part 2, and a reverse acting force is applied to keep the extending state, when the milling device has a downward movement trend, on one hand, the reverse acting force enables the lock tongue not to rotate towards an initial position, so that the lock tongue can be always embedded into the tooth-shaped groove on the tooth-shaped part 2; on the other hand, the latch bolt mechanism 4 is forced to have a clockwise rotation trend by an oblique upward force on the inner wall of the tooth-shaped groove of the tooth-shaped member 2, so that the latch bolt mechanism 4 is ensured to be always embedded into the tooth-shaped groove of the tooth-shaped member 2.
Fig. 2 shows the unlocked state of the vertical locking mechanism: when the milling device is unlocked and descended in the milling operation, the driving and holding device 6 inputs a power source, the linear driver overcomes the self reaction force under the action of the power source to enable the bolt mechanism 4 to rotate towards the initial position, the bolt mechanism 4 leaves from the tooth-shaped groove on the tooth-shaped element 2, and the milling device completes vertical unlocking.
When the milling device finishes milling operation and is lifted vertically, the driving and maintaining device 6 drives the bolt mechanism 4 to rotate to an initial position, a certain distance is kept between the bolt and the tooth-shaped part 2 in space, and the driving and maintaining device 8 drives the bolt mechanism 4 to rotate to a locking limit position after the milling device is normally lifted to a locking position to complete locking.
When the milling device is lifted emergently, the power-off working condition of an operating system is considered at the same time, the milling device has no other power source input except that an energy accumulator supplies oil to a lifting oil cylinder, at the moment, the locking mechanism drives the retaining device 6 to have no power source to drive the bolt mechanism 4 to rotate to the initial position, the bolt mechanism 4 and the tooth-shaped part 2 have interference in space, when the milling device is lifted, the tooth tip on the tooth-shaped part 2 collides with the bolt mechanism 4, in the process, the bolt mechanism 4 rotates to the initial position for a certain angle under the oblique force action of the tooth tip on the tooth-shaped part 2 until the bolt mechanism 4 is separated from the tooth tip of the tooth-shaped part 2, and the bolt mechanism 4 is embedded into a tooth-. Along with the emergency lifting of the milling device, the process is continuously carried out on the bolt and the tooth tip of the tooth-shaped part 2 until the milling device is lifted to the safe height, and at the moment, the bolt mechanism 4 is embedded into the tooth-shaped groove of the tooth-shaped part 2.
Under the working conditions of maintenance and overhaul, the tooth-shaped part 2 is provided with a plurality of tooth-shaped grooves according to a certain pitch, and the milling device can find corresponding locking positions on the tooth-shaped part 2 as long as the vertical moving distance of the milling device is integral multiple of the pitch of the tooth-shaped grooves of the tooth-shaped part 2.
A milling device comprises the vertical locking mechanism for the milling device under multiple working conditions in any one of the preferable schemes.
The above embodiments are merely preferred embodiments, wherein the components and the connection relationships are not limited to the above embodiments, and the arrangement and the connection relationships of the components in the preferred embodiments can be arbitrarily arranged and combined to form a complete technical solution.
Claims (23)
1. A vertical locking mechanism used under multiple working conditions of a milling device comprises a vertical moving part (7) of the milling device, a transverse supporting plate (1), a lock tongue mechanism (4) and a driving and retaining device (6), and is characterized in that a tooth-shaped part (2) is arranged on the transverse supporting plate (1), and a plurality of tooth-shaped grooves are formed in the tooth-shaped part (2) according to a certain pitch; the spring bolt mechanism (4) is hinged with a vertical moving part (7) of the milling device, the driving retaining device (6) is hinged with the vertical moving part (7) of the milling device, and the spring bolt mechanism (4) is hinged with the driving retaining device (6) and enters the tooth-shaped groove through the driving retaining device (6).
2. The vertical locking mechanism for milling devices under multiple operating conditions as claimed in claim 1, characterized in that the latch mechanism (4) is mounted on the milling device vertical moving part (7) through the rotating shaft (3), and the drive retaining device (6) is hinged on the milling device vertical moving part (7) through the ear seat (8).
3. The vertical locking mechanism for the milling device under multiple operating conditions as claimed in claim 1 is characterized in that two position detection elements are arranged at two rotation limit positions of the latch mechanism (4), and the two position detection elements are used for feeding back the position state of the latch mechanism (4) to a milling device control system to realize safety interlocking.
4. The vertical locking mechanism for milling devices in multiple operating modes according to claim 3, characterized in that the two position detection elements employ position detection sensors (5).
5. The vertical locking mechanism for milling devices under multiple operating conditions as claimed in claim 1, characterized in that the tooth-shaped member (2) is provided with a mounting hole at the back of the tooth-shaped groove, the tooth-shaped member (2) is fixedly mounted on the transverse supporting plate (1) through the mounting hole, and the tooth-shaped member (2) moves transversely with the transverse supporting plate (1) and is used for bearing the weight of the vertical moving part (7) of the milling device.
6. The vertical locking mechanism for milling devices in multiple operating modes according to claim 1, characterized in that the drive retaining device (6) is a linear drive.
7. The vertical locking mechanism for the milling device under multiple working conditions as claimed in claim 6, wherein the power source of the linear driver is driven by any one of electricity, liquid and gas.
8. The vertical locking mechanism for the milling device under multiple operating conditions as claimed in claim 1, characterized in that the latch mechanism (4) is reliably inserted into the tooth-shaped groove all the time under the action of the drive retaining device (6) until the drive retaining device (6) introduces power to move the latch mechanism (4) out.
9. The vertical locking mechanism for milling devices in multiple operating modes according to claim 8, characterized in that when the milling device has an upward movement tendency, the latch bolt mechanism (4) can smoothly leave the tooth-shaped groove without interference.
10. The vertical locking mechanism for milling devices under multiple operating conditions of claim 8, characterized in that the latch mechanism (4) comprises a latch, and the latch is completely embedded into the next tooth groove when the latch mechanism (4) moves upwards for one tooth pitch.
11. The vertical locking mechanism for the milling device under multiple working conditions as claimed in claim 8 is characterized in that when the driving retaining device (6) has no power input and the milling device has a downward movement tendency, the latch mechanism (4) is tightly attached to the upper surface of the inner wall of the tooth-shaped groove and forms a self-locking structure, so that the milling device is ensured not to generate downward displacement.
12. The vertical locking mechanism for the milling device under multiple working conditions as claimed in claim 1, wherein the number of the tooth-shaped grooves is set according to actual requirements.
13. The vertical locking mechanism for milling devices under multiple operating conditions as claimed in claim 4, characterized in that the position detection sensor (5) is a contact position sensor.
14. The vertical locking mechanism for milling devices under multiple operating conditions as claimed in claim 4, characterized in that the position detection sensor (5) is a proximity position sensor.
15. The vertical locking mechanism for milling devices under multiple operating conditions of claim 13, wherein the contact position sensor is a travel switch or a two-dimensional matrix position sensor.
16. The vertical locking mechanism for a milling device under multiple operating conditions of claim 14, wherein the proximity position sensor is an electromagnetic position sensor.
17. The vertical locking mechanism for the milling device under multiple operating conditions as claimed in claim 14, wherein the proximity position sensor is a photoelectric position sensor.
18. The vertical locking mechanism for milling equipment under multiple operating conditions of claim 14, wherein the proximity position sensor is a differential transformer position sensor.
19. The vertical locking mechanism for milling devices under multiple operating conditions of claim 14, wherein the proximity position sensor is an eddy current position sensor.
20. The vertical locking mechanism for milling equipment under multiple operating conditions of claim 14, wherein the proximity position sensor is a capacitive position sensor.
21. The vertical locking mechanism for milling equipment under multiple operating conditions of claim 14, wherein the proximity position sensor is a reed pipe position sensor.
22. The vertical locking mechanism for milling devices under multiple operating conditions of claim 14, wherein the proximity position sensor is a hall position sensor.
23. A milling device, characterized by comprising a vertical locking mechanism for a milling device in multiple operating conditions according to any one of claims 1 to 22.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020217686.0U CN212925631U (en) | 2020-02-27 | 2020-02-27 | Vertical locking mechanism for milling device under multiple working conditions and milling device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020217686.0U CN212925631U (en) | 2020-02-27 | 2020-02-27 | Vertical locking mechanism for milling device under multiple working conditions and milling device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN212925631U true CN212925631U (en) | 2021-04-09 |
Family
ID=75295804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202020217686.0U Active CN212925631U (en) | 2020-02-27 | 2020-02-27 | Vertical locking mechanism for milling device under multiple working conditions and milling device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN212925631U (en) |
-
2020
- 2020-02-27 CN CN202020217686.0U patent/CN212925631U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201842558U (en) | Car door locking device of elevator door knife | |
JP5570598B2 (en) | Device for entraining axle doors by elevator car doors | |
CN107514187B (en) | Electric locking device for subway shield door | |
CN212925631U (en) | Vertical locking mechanism for milling device under multiple working conditions and milling device | |
CN2931706Y (en) | Door lock of horizontal sliding door | |
CN111304982A (en) | Vertical locking mechanism for milling device under multiple working conditions and milling device | |
CN105800436A (en) | Integrated car door lock asynchronous door vane device | |
CN208516731U (en) | A kind of lift car fall arrest bearing device | |
CN115503456B (en) | Battery box locking device assembly of electric truck | |
US6209612B1 (en) | Locking device for a door system | |
CN210659752U (en) | Upper-bearing lower-guiding electric translation monitoring room door assembly and translation monitoring room door system | |
CN212716199U (en) | Transmission mechanism | |
CN109281544B (en) | Electromagnetic lock for track traffic half-height safety door | |
CN210795466U (en) | Little drive passenger lift anticollision structure that tows of vibrations | |
CN210914904U (en) | Protective device for elevator car door | |
CN219548645U (en) | Novel gravity self-locking electric mortise lock with signal feedback | |
CN220285520U (en) | Novel hinge type side-by-side combination door gravity lock | |
CN113682934B (en) | Synchronous locking device about elevator sedan-chair door | |
CN217353908U (en) | Door lock and elevator with same | |
CN217729686U (en) | Platform detection stroke mechanism suitable for large-layer-height 3D printing | |
CN220769125U (en) | Locking device for wind generating set | |
CN212716285U (en) | Driving device, locking system and equipment | |
CN217732392U (en) | Double-arm telescopic elevator door lock and elevator | |
CN114016821B (en) | Self-service financial equipment's latch mechanism | |
CN218538909U (en) | Elevator cage door |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |